noun
dystrophic lake
A lake with brownish, humic-rich water, low in nutrients, and often acidic; a technical term in limnology.
腐植栄養湖は、周囲の湿地から流入する腐植質によって水が茶褐色に濁っている。
A dystrophic lake has brownish water due to humic substances flowing in from surrounding wetlands.
Compound of 腐植 (ふしょく, 'humus') + 栄養 (えいよう, 'nutrition') + 湖 (こ, 'lake'), describing a lake type characterized by humic substances.